CVE-2019-8726: High severity Apple tvOS vulnerability

Published Sep 19, 2019
·
Updated

Multiple memory corruption issues were addressed with improved memory handling. This issue is fixed in tvOS 13, iTunes for Windows 12.10.1, iCloud for Windows 10.7, iCloud for Windows 7.14. Processing maliciously crafted web content may lead to arbitrary code execution.

Other sources

WebKit. Multiple memory corruption issues were addressed with improved memory handling.

WebKitGTK Security Advisory WSA-2019-0005 describes the following issue:

CVE-2019-8726

Impact: Processing maliciously crafted web content may lead to arbitrary code execution. Description: Multiple memory corruption issues were addressed with improved memory handling.

Versions affected: WebKitGTK before 2.24.3 and WPE WebKit before 2.24.3.

— Red Hat

Credit

an anonymous researcher(Trend Micro), cc(Trend Micro Zero Day Initiative), found by OSS-Fuzz, Jihui Lu(Tencent KeenLab), Junho Jang(LINE Security Team), Hanul Choi(ABLY Corporation), Sergei Glazunov(Google Project Zero), G. Geshev(Trend Micro Zero Day Initiative), zhunki(Codesafe Team of Legendsec at Qi), Dongzhuo Zhao(ADLab of Venustech), Samuel Groß(Google Project Zero)

Affected Software

22 affected componentsFixes available
redhat/webkitgtk<2.24.3
2.24.3
Apple tvOS<13
13
Apple iCloud for Windows<7.14
7.14
Apple iCloud for Windows<10.7
10.7
Apple iTunes for Windows<12.10.1
12.10.1
Apple Icloud Windows<7.14
Apple Icloud Windows>=10.0<10.7
Apple Itunes Windows<12.10.1
Apple tvOS<13
Apple Safari<13
13
Apple iOS<13
13
alpine/webkit2gtk<2.24.3-r0
2.24.3-r0
alpine/webkit2gtk<2.24.3-r0
2.24.3-r0
alpine/webkit2gtk<2.24.3-r0
2.24.3-r0
alpine/webkit2gtk<2.24.3-r0
2.24.3-r0
alpine/webkit2gtk<2.24.3-r0
2.24.3-r0
alpine/webkit2gtk<2.24.3-r0
2.24.3-r0
alpine/webkit2gtk<2.24.3-r0
2.24.3-r0
alpine/webkit2gtk<2.24.3-r0
2.24.3-r0
alpine/webkit2gtk<2.24.3-r0
2.24.3-r0
alpine/webkit2gtk<2.24.3-r0
2.24.3-r0
alpine/webkit2gtk<2.24.3-r0
2.24.3-r0

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade redhat/webkitgtk to a version that resolves this vulnerability.

    Fixed in 2.24.3
  2. Upgrade

    Upgrade tvOS to a version that resolves this vulnerability.

    Fixed in 13
  3. Upgrade

    Upgrade Apple iCloud to a version that resolves this vulnerability.

    Fixed in 7.14
  4. Upgrade

    Upgrade Apple iCloud to a version that resolves this vulnerability.

    Fixed in 10.7
  5. Upgrade

    Upgrade iTunes to a version that resolves this vulnerability.

    Fixed in 12.10.1
  6. Upgrade

    Upgrade Safari to a version that resolves this vulnerability.

    Fixed in 13
  7. Upgrade

    Upgrade Apple iOS and iPadOS to a version that resolves this vulnerability.

    Fixed in 13
  8. Upgrade

    Upgrade alpine/webkit2gtk to a version that resolves this vulnerability.

    Fixed in 2.24.3-r0
  9. Upgrade

    Upgrade iTunes for Windows to a version that resolves this vulnerability.

    Fixed in 12.10.1
  10. Upgrade

    Upgrade iCloud for Windows to a version that resolves this vulnerability.

    Fixed in 10.7
  11. Upgrade

    Upgrade iCloud for Windows to a version that resolves this vulnerability.

    Fixed in 7.14
  12. Upgrade

    Upgrade WebKitGTK to a version that resolves this vulnerability.

    Fixed in 2.24.3
  13. Upgrade

    Upgrade WPE WebKit to a version that resolves this vulnerability.

    Fixed in 2.24.3

Event History

Dec 18, 2019
CVE Published
via MITRE·05:33 PM
Data Sourced
via MITRE·05:33 PM
DescriptionWeakness
Data Sourced
via NVD·06:15 PM
DescriptionSeverityWeaknessAffected Software
Data Sourced
via OSV·06:15 PM
DescriptionSeverityAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

1

What is CVE-2019-8726?

CVE-2019-8726 is a vulnerability in WebKit that allows for arbitrary code execution when processing maliciously crafted web content.

2

What is the severity of CVE-2019-8726?

The severity of CVE-2019-8726 is high, with a CVSS score of 8.8.

3

Which software versions are affected by CVE-2019-8726?

CVE-2019-8726 affects the following software versions: - Apple macOS Monterey up to version 12.10.1 - Apple iCloud for Windows up to version 10.7 - Apple tvOS up to version 13 - WebKitGTK up to version 2.24.3.

4

How do I fix CVE-2019-8726?

To fix CVE-2019-8726, update your software to the following versions: - Apple macOS Monterey 12.10.1 or later - Apple iCloud for Windows 10.7 or later - Apple tvOS 13 or later - WebKitGTK 2.24.3 or later.

5

Where can I find more information about CVE-2019-8726?

You can find more information about CVE-2019-8726 on the Apple support page: - [Apple Support Article 1](https://support.apple.com/en-us/HT210606) - [Apple Support Article 2](https://support.apple.com/en-us/HT210604) - [Apple Support Article 3](https://support.apple.com/en-us/HT210608)

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